This activity helps users understand the quark structure of elementary particles. Users choose combinations of three quarks to see what particles can be made. Click on the "Curious?" button reveals a number of...

This website contains eight one-hour videos designed to help K–6 teachers gain an understanding of some of the basic physical science concepts they need to teach in today’s standards-based curricula. Programs include...

This web site presents illustrations of the Fermi surfaces of many of the elements in the periodic table. Interactive 3D illustrations, stereo-3D images, and standard jpeg images are available. Surfaces can be displayed...

This two-volume modern textbook for introductory calculus-based college physics courses emphasizes qualitative as well as quantitative reasoning, and puts heavy emphasis on atomic-level description and analysis. Its...

This website, authored by Hank Hogan of Photonics.Com, contains a brief article on a light source made with carbon nanotubes. The text describes the construction and operation of the light source, and an image is...